Switch to stateless rather than stateful for flag

hooks/cinder_hooks.py

@@ -118,7 +118,7 @@ def storage_backend(rel_id=None):
             relation_id=rel_id,
             backend_name=service_name(),
             subordinate_configuration=json.dumps(CephSubordinateContext()()),
-            stateful=False,
+            stateless=True,
         )
 
 

unit_tests/test_cinder_hooks.py

@@ -137,5 +137,5 @@ class TestCinderHooks(CharmTestCase):
             relation_id=None,
             backend_name='test',
             subordinate_configuration=json.dumps({'test': 1}),
-            stateful=False,
+            stateless=True,
             )